The S&W Model 73 was a revolver manufactured by Smith & Wesson

Smith & Wesson

Smith & Wesson is the largest manufacturer of handguns in the United States. The corporate headquarters is in Springfield, Massachusetts. Founded in 1852, Smith & Wesson's pistols and revolvers have become standard issue to police and armed forces throughout the world...

. It was made in only 5000 units in 1973. It was made in C-frame, the only model that featured this frame. It was a J-frame modified to take a 6-shot K-frame cylinder. It was S&W answer to the Colt

Colt's Manufacturing Company

Colt's Manufacturing Company is a United States firearms manufacturer, whose first predecessor corporation was founded in 1836 by Sam Colt. Colt is best known for the engineering, production, and marketing of firearms over the later half of the 19th and the 20th century...

 Detective Special.

Most of these guns were destroyed and there are probably no more than 5 of these left in collectors ownership.